检查此解决方案 - 它通过 API 调用删除最大化/最小化/标题栏/边框。
public partial class Form1 : Form
{
// import necessary API functions to get and set Windows styles for P/Invoke
[DllImport("user32.dll")]
internal extern static int SetWindowLong(IntPtr hwnd, int index, int value);
[DllImport("user32.dll")]
internal extern static int GetWindowLong(IntPtr hwnd, int index);
// define constants like they are named in SDK in order to make source more readable
const int GWL_STYLE = -16;
const int GWL_EXSTYLE = -20;
const int WS_MINIMIZEBOX = 0x00020000;
const int WS_MAXIMIZEBOX = 0x00010000;
const int WS_CAPTION = 0x00C00000;
const int WS_THICKFRAME = 0x00040000;
const int WS_EX_DLGMODALFRAME = 0x00000001;
const int WS_EX_CLIENTEDGE = 0x00000200;
const int WS_EX_STATICEDGE = 0x00020000;
// this replaces MinimizeBox=false and MaximizeBox=false
void HideMinimizeAndMaximizeButtons()
{
// read current style
int style = GetWindowLong(Handle, GWL_STYLE);
Debug.WriteLine("0x{0:X}", style);
// update style - remove flags for MinimizeBox and MaximizeBox
style = style & ~WS_MINIMIZEBOX & ~WS_MAXIMIZEBOX;
Debug.WriteLine("0x{0:X}", style);
SetWindowLong(Handle, GWL_STYLE, style);
}
// part of removing the whole border
void HideTitleBar()
{
// read current style
int style = GetWindowLong(Handle, GWL_STYLE);
Debug.WriteLine("0x{0:X}", style);
// update style - remove flag for caption
style = style & ~WS_CAPTION;
Debug.WriteLine("0x{0:X}", style);
SetWindowLong(Handle, GWL_STYLE, style);
}
// hide the border
void HideBorder()
{
// read current style
int style = GetWindowLong(Handle, GWL_STYLE);
Debug.WriteLine("0x{0:X}", style);
// update style - remove flag for border (could use WS_SIZEBOX which is the very same flag (see MSDN)
style = style & ~WS_THICKFRAME;
Debug.WriteLine("0x{0:X}", style);
SetWindowLong(Handle, GWL_STYLE, style);
// read current extended style
style = GetWindowLong(Handle, GWL_EXSTYLE);
Debug.WriteLine("0x{0:X}", style);
// update style by removing some additional border styles -
// may not be necessary, when current border style is not something exotic,
// i.e. as long as it "normal"
style = style & ~WS_EX_DLGMODALFRAME & ~WS_EX_CLIENTEDGE & ~WS_EX_STATICEDGE;
Debug.WriteLine("0x{0:X}", style);
SetWindowLong(Handle, GWL_EXSTYLE, style);
}
public Form1()
{
InitializeComponent();
// hide those unwanted properties - you can try to leave out one or another to see what it does
HideMinimizeAndMaximizeButtons();
HideTitleBar();
HideBorder();
}
}
这按预期工作。通过设置 WindowState 来最大化/最小化也可以。
人们可以从源代码中分析框架做了什么以及它做了什么“错误”(或不完全正确)。
编辑:我添加了样式值的调试输出。请在 Form1 构造函数中尝试以下命令序列:
MaximizeBox = false;
FormBorderStyle = FormBorderStyle.Sizable;
HideMinimizeAndMaximizeButtons();
FormBorderStyle = FormBorderStyle.None;
MaximizeBox = true;
MaximizeBox = false;
HideMinimizeAndMaximizeButtons();
FormBorderStyle = FormBorderStyle.None;
HideMinimizeAndMaximizeButtons();
您会看到,设置 FormBorderStyle.None 启用 WS_MAXIMIZEBOX 样式。这不能被另一个“纠正” MaximizeBox = false
。似乎有必要调用 API 函数。